Example to demonstrate differences between CyclicBarrier and CountDownLatch.

core-java-concurrency/src/test/java/com/baeldung/concurrent/countdownlatch/CountdownLatchCountExampleUnitTest.java

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+package com.baeldung.concurrent.countdownlatch;
+
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+public class CountdownLatchCountExampleUnitTest {
+
+    @Test
+    public void whenCountDownLatch_completed() {
+        CountdownLatchCountExample ex = new CountdownLatchCountExample(2);
+        boolean isCompleted = ex.callTwiceInSameThread();
+        assertTrue(isCompleted);
+    }
+}

core-java-concurrency/src/test/java/com/baeldung/concurrent/countdownlatch/CountdownLatchResetExampleUnitTest.java

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+package com.baeldung.concurrent.countdownlatch;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.ArrayList;
+
+import org.junit.Test;
+
+public class CountdownLatchResetExampleUnitTest {
+    
+    @Test
+    public void whenCountDownLatch_noReset() {
+        CountdownLatchResetExample ex = new CountdownLatchResetExample(new ArrayList<>(),5,20);
+        int lineCount = ex.countWaits();
+        assertEquals(5, lineCount);
+    }
+}

core-java-concurrency/src/test/java/com/baeldung/concurrent/cyclicbarrier/CyclicBarrierCompletionMethodExampleUnitTest.java

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+package com.baeldung.concurrent.cyclicbarrier;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.ArrayList;
+
+import org.junit.Test;
+
+public class CyclicBarrierCompletionMethodExampleUnitTest {
+    
+    @Test
+    public void whenCyclicBarrier_countTrips() {
+        CyclicBarrierCompletionMethodExample ex = new CyclicBarrierCompletionMethodExample(new ArrayList<>(),5,20);
+        int lineCount = ex.countTrips();
+        assertEquals(4, lineCount);
+    }
+}

core-java-concurrency/src/test/java/com/baeldung/concurrent/cyclicbarrier/CyclicBarrierCountExampleUnitTest.java

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+package com.baeldung.concurrent.cyclicbarrier;
+
+import static org.junit.Assert.assertFalse;
+
+import org.junit.Test;
+
+public class CyclicBarrierCountExampleUnitTest {
+
+    @Test
+    public void whenCyclicBarrier_notCompleted() {
+        CyclicBarrierCountExample ex = new CyclicBarrierCountExample(2);
+        boolean isCompleted = ex.callTwiceInSameThread();
+        assertFalse(isCompleted);
+    }
+}

core-java-concurrency/src/test/java/com/baeldung/concurrent/cyclicbarrier/CyclicBarrierResetExampleUnitTest.java

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+package com.baeldung.concurrent.cyclicbarrier;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.ArrayList;
+
+import org.junit.Test;
+
+public class CyclicBarrierResetExampleUnitTest {
+    
+    @Test
+    public void whenCyclicBarrier_reset() {
+        CyclicBarrierResetExample ex = new CyclicBarrierResetExample(new ArrayList<>(),5,20);
+        int lineCount = ex.countWaits();
+        assertEquals(16, lineCount);
+    }
+}